org.postgresql.util.PSQLException: An I/O error occured while sending to the backend.
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:214)
at org.postgresql.jdbc2.AbstractJdbc2Connection.executeTransactionCommand(AbstractJdbc2Connection.java:621)
at org.postgresql.jdbc2.AbstractJdbc2Connection.rollback(AbstractJdbc2Connection.java:658)
at org.apache.commons.dbcp.DelegatingConnection.rollback(DelegatingConnection.java:328)
at org.apache.commons.dbcp.DelegatingConnection.rollback(DelegatingConnection.java:328)
at org.apache.commons.dbcp.PoolingDriver$PoolGuardConnectionWrapper.rollback(PoolingDriver.java:377)
at org.dspace.core.Context.abort(Context.java:356)
at org.dspace.core.Context.finalize(Context.java:499)
at java.lang.J9VMInternals.runFinalize(J9VMInternals.java:412)
Caused by: java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:110)
at java.net.SocketOutputStream.write(SocketOutputStream.java:147)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:76)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:134)
at org.postgresql.core.PGStream.flush(PGStream.java:530)
at org.postgresql.core.v3.QueryExecutorImpl.sendSync(QueryExecutorImpl.java:672)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:187)
... 8 more
java.sql.SQLException: Already closed.
at org.apache.commons.dbcp.PoolableConnection.close(PoolableConnection.java:84)
at org.apache.commons.dbcp.PoolingDriver$PoolGuardConnectionWrapper.close(PoolingDriver.java:269)
at org.dspace.storage.rdbms.DatabaseManager.freeConnection(DatabaseManager.java:566)
at org.dspace.core.Context.abort(Context.java:365)
at org.dspace.core.Context.finalize(Context.java:499)
at java.lang.J9VMInternals.runFinalize(J9VMInternals.java:412)
$
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